Sunday, May 8, 2016

Section: 16
Hours: 2

Today is Mother's day so I didn't do much in the garage. I did finish up the last couple tasks for section 16.

I riveted the outboard aileron bracket which ties in the end rib to the subpar.

Then I did the counter sinks for the nut plates at the inboard end of the top wing skins. These are large countersinks to fit a skin dimpled for a #8 screw. The #8 countersink would not go in far enough- the pilot pin gets stopped by the nut plates since they taper and the pilot doesn't. I cleared out all the holes with the #8 as deep as it would go and then carefully finished with the #30 countersink to full depth.

 The countersinking goes through 3 layers of metal.

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